CN111706745A - Anticorrosive protection device of flange and fastener under marine environment - Google Patents
Anticorrosive protection device of flange and fastener under marine environment Download PDFInfo
- Publication number
- CN111706745A CN111706745A CN202010594111.5A CN202010594111A CN111706745A CN 111706745 A CN111706745 A CN 111706745A CN 202010594111 A CN202010594111 A CN 202010594111A CN 111706745 A CN111706745 A CN 111706745A
- Authority
- CN
- China
- Prior art keywords
- flange
- steel belt
- oil
- protection device
- marine environment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 39
- 239000010959 steel Substances 0.000 claims abstract description 39
- 239000004519 grease Substances 0.000 claims abstract description 29
- 229920001971 elastomer Polymers 0.000 claims abstract description 24
- 238000005260 corrosion Methods 0.000 claims abstract description 21
- 238000002347 injection Methods 0.000 claims abstract description 16
- 239000007924 injection Substances 0.000 claims abstract description 16
- 239000000945 filler Substances 0.000 claims abstract description 15
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 238000005536 corrosion prevention Methods 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000001050 lubricating effect Effects 0.000 abstract description 9
- 238000012423 maintenance Methods 0.000 abstract description 5
- 229910001220 stainless steel Inorganic materials 0.000 abstract description 5
- 239000010935 stainless steel Substances 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 4
- 230000001681 protective effect Effects 0.000 abstract description 4
- 238000000576 coating method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 239000011248 coating agent Substances 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 5
- 239000000806 elastomer Substances 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004035 construction material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000002445 nipple Anatomy 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012549 training Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation
- F16L58/18—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings
- F16L58/187—Protection of pipes or pipe fittings against corrosion or incrustation specially adapted for pipe fittings for flanged joints
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L23/00—Flanged joints
- F16L23/006—Attachments
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Flanged Joints, Insulating Joints, And Other Joints (AREA)
Abstract
The invention discloses an anti-corrosion protection device for a flange and a fastener in a marine environment, which consists of a steel belt, a locking buckle, an oil-resistant rubber convex liner, a grease injection nozzle and a flange plate, wherein the steel belt is arranged into a circular structure and has a certain width; and the top of the steel strip is cut to form two ends; the end part is provided with a locking buckle; the lower end of the steel belt is provided with a grease injection nozzle; an oil-resistant rubber convex liner is adhered to the inner surface of the steel belt; two of the flanges are connected with a pipeline; a flange boss and a gasket are arranged between the flange plates, and grease filler is filled around the flange plates; the flange plates are connected with each other through fastening bolts. The weather-proof stainless steel is used as a protective outer layer structure, and compared with materials used in other schemes, the weather-proof stainless steel has longer protection life; the oil-resistant convex liner is designed, so that the use of sealing filler is reduced, and the later maintenance cost is saved; the filler can be universal lubricating grease, and the material is cheap and easy to obtain and is not limited by the market.
Description
Technical Field
The invention belongs to the technical field of ocean engineering, and particularly relates to an anti-corrosion protection device for a flange and a fastener in an ocean environment.
Background
The marine environment is a high-corrosivity environment, and various measures are adopted in the industry to protect metal equipment and slow down the corrosion of the equipment. For regular surfaces, various heavy duty coatings are widely used. But for the flange joint, the antiseptic treatment work is complex, the treatment methods are different, and the received effects are different. Through long-term experience, the parts, which are most prone to corrosion, of the flange joint are the joint gap of the flange plate and the fastening piece. There are mainly the following reasons: firstly, rainwater or seawater is easy to accumulate to form a corrosive environment; secondly, the electrolyte is exposed in high-temperature, high-humidity and high-salt ocean air for a long time to form a continuous electrolyte film, so that the electrochemical corrosion is accelerated; and thirdly, stress corrosion.
In order to protect equipment and slow down corrosion, the following main measures are adopted at present.
1. And (4) coating the anticorrosive paint on site. The method has the advantages of low operation cost and direct effect, but the operation site is limited by construction sites and equipment, most of the operation sites are manual operation, the outdoor coating construction under the high-temperature, high-salt and high-humidity environment is not ideal, the phenomena of bulging, coating falling and the like are easy to occur, the protection period is short, and the coating working strength is high.
2. And (4) additionally installing a flange sheath. Various flange sheaths exist in the current market, and can play a role in protection to a certain extent. However, in the marine environment, the flexible flange sheath has short service life and poor protection effect, and cannot really and effectively isolate corrosive air. Plastic and stainless steel sheaths cannot insulate air, and moreover require a certain installation space, are not suitable for use in compact working surfaces, and cannot protect fasteners at the same time.
3. Tape and grease protection. According to the summary experience, lubricating grease is firstly coated in a flange connecting gap, and then an adhesive tape is wound for protection. The method solves the problem of isolating corrosive air to a certain extent, combines the antirust function of the lubricating grease, and has ideal overall protection effect. However, under the combined action of the lubricating grease and the external environment, the adhesive tape is quickly aged and brittle and has a short protection period, so that the protective effect cannot be achieved, seawater or rainwater can be accumulated, and the corrosion is accelerated.
4. And (4) field elastomer protection. There are technical solutions proposed that field workers manually coat rubber elastomers and form protective structures after curing. The method has good protection effect, but the manual coating operation quality is not easy to control, the appearance is not easy to be regular, and the method is particularly not suitable for occasions with requirements on the appearance. In addition, the curing and forming are not easy to overhaul.
5. One patent (application No. 201521119716x) discloses an elastomer filled anti-corrosion structure, which is described as being filled with a special elastomer and then wrapped with anti-corrosion tape. The method can isolate the corrosive environment to a certain extent and has the anticorrosion effect, but has the following defects: firstly, the service life of the anti-corrosion adhesive tape can not be ensured in the marine environment; secondly, the elastomer is not easy to clean during maintenance; thirdly, the filler can not be used for corrosion prevention of the fastener; fourthly, construction tools and construction materials are not easy to obtain, and special tools and special fillers need to be purchased. In conclusion, I have designed an anticorrosive protection device for flanges and fasteners in marine environment.
Disclosure of Invention
In order to solve the existing problems, the invention provides an anti-corrosion protection device for a flange and a fastener in a marine environment.
The invention is realized by the following technical scheme:
an anti-corrosion protection device for flanges and fasteners in marine environments comprises a steel belt, a locking buckle, an oil-resistant rubber convex liner, a grease injection nozzle and a flange plate, wherein the steel belt is arranged into a circular structure and has a certain width; and the top of the steel strip is cut to form two ends; the end part is provided with a locking buckle; the lower end of the steel belt is provided with a grease injection nozzle; an oil-resistant rubber convex liner is adhered to the inner surface of the steel belt; two of the flanges are connected with a pipeline; a flange boss and a gasket are arranged between the flange plates, and grease filler is filled around the flange plates; the flange plates are connected with each other through fastening bolts.
As a further optimized scheme of the invention, the oil-resistant rubber convex liner is arranged on the inner surface of the steel belt, and the cross section of the oil-resistant rubber convex liner is 1/2 of the width of the steel belt; the two sides of the convex liner of the oil-resistant rubber are provided with flange plate peripheral convex sealing surfaces.
As a further optimization scheme of the invention, the steel belt is provided with locking buckles, and one group of locking buckles or two groups of locking buckles at two sides can be arranged in the middle according to the difference of the size of the flange and the width of the steel belt; and a viewing opening is arranged between the two locking buckles.
As a further optimized scheme of the present invention, the number of grease injection nozzles on the steel strip is not limited to 1, and a plurality of injection holes may be arranged according to the size of the flange in actual production.
As a further optimization scheme of the invention, the thicknesses of the two sealing sides of the two flange plates with different diameters can be selected and customized to realize the sealing of the periphery of the flange and the anti-corrosion device.
Compared with the prior art, the invention has the beneficial effects that: the weather-proof stainless steel is used as a protective outer layer structure, and compared with materials used in other schemes, the weather-proof stainless steel has longer protection life; the oil-resistant convex liner is designed, so that the use of sealing filler is reduced, and the later maintenance cost is saved; the filler can be universal lubricating grease, and the material is cheap and easy to obtain and is not limited by the market; the lubricating grease filler can be infiltrated into the position of the fastener, and can play a role in corrosion prevention and protection of the fastener; the anti-corrosion device is simple to install, construct and maintain on site, other special tools do not need to be purchased additionally, and workers can master the anti-corrosion device without training; the anti-corrosion device is suitable for various complicated and narrow working surfaces of flange connection parts; the anti-corrosion device increases the universality of use and maintenance by additionally arranging a grease nipple standard part; the anti-corrosion device can be repeatedly used.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view of a steel strip 1 of the present invention;
FIG. 3 is a schematic view of the structural installation of the present invention;
FIG. 4 is a structural cross-sectional view of the present invention;
FIG. 5 is a schematic of the grease injection of the present invention;
FIG. 6 is a cross-sectional view of a steel strip of the present invention 2; .
In the figure: 1. a steel belt; 2. a locking buckle; 3. an oil-resistant rubber convex liner; 4. a grease injection nozzle; 5. the periphery of the flange is convex and sealed; 6. reserving a viewing port; 7. a flange plate; 8. a pipeline; 9. a grease filler; 10. fastening a bolt; 11. flange boss and gasket.
Detailed Description
The invention is described in further detail below with reference to the following detailed description and accompanying drawings:
as shown in fig. 1-6, an anticorrosion protection device for a flange and a fastener in a marine environment comprises a steel belt (1), a locking buckle (2), an oil-resistant rubber convex liner (3), a grease injection nozzle (4) and a flange plate (7), wherein the steel belt (1) is arranged in a circular structure and has a certain width; and the top of the steel strip (1) is cut to form two ends; the end part is provided with a locking buckle (2); the lower end of the steel belt (1) is provided with a grease injection nozzle (4); an oil-resistant rubber convex lining (3) is adhered to the inner surface of the steel belt (1); two of the flanges (7) are not connected with a pipeline (8); a flange boss and a gasket (11) are arranged between the flange plates (7), and grease packing (9) is filled around the flange plates; the flange plates (7) are connected with each other through fastening bolts (10); the oil-resistant rubber convex liner (3) is arranged on the inner surface of the steel belt (1), and the cross section of the oil-resistant rubber convex liner (3) is 1/2 of the width of the steel belt (1); two sides of the oil-resistant rubber convex liner (3) are provided with flange plate peripheral convex sealing surfaces (5); the steel belt (1) is provided with locking buckles (2), and one group of locking buckles (2) or two groups of locking buckles (2) at two sides can be arranged in the middle of the steel belt (1) according to the difference between the size of the flange and the width of the steel belt (1); a viewing opening (6) is arranged between the two locking buckles (2); the number of the grease injection nozzles (4) on the steel strip (1) is not limited to 1, and a plurality of injection holes can be formed according to the size of a flange in actual production; the two flange plates (7) with different diameters can be used for selectively customizing the thickness of the two-side seal so as to realize the seal of the periphery of the flange and the anti-corrosion device.
In the embodiment of the device, the plane around the flange is simply cleaned to be approximately flat; installing an anti-corrosion device and fastening a locking buckle; injecting lubricating grease, observing a reserved viewing opening, and filling the lubricating grease filler; when the lubricating grease filler needs to be replaced, the filler is injected at the injection nozzle, and meanwhile, the old filler is extruded out, so that the replacement and maintenance are completed.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (5)
1. The utility model provides an anticorrosive protection device of flange and fastener under marine environment comprises steel band, locking buckle, the protruding type inside lining of resistant oil rubber, grease filling nozzle, ring flange, its characterized in that: the steel belt is arranged in a circular structure and has a certain width; and the top of the steel strip is cut to form two ends; the end part is provided with a locking buckle; the lower end of the steel belt is provided with a grease injection nozzle; an oil-resistant rubber convex liner is adhered to the inner surface of the steel belt; two of the flanges are connected with a pipeline; a flange boss and a gasket are arranged between the flange plates, and grease filler is filled around the flange plates; the flange plates are connected with each other through fastening bolts.
2. The corrosion prevention and protection device for the flange and the fastener in the marine environment according to claim 1, wherein: the oil-resistant rubber convex lining is arranged on the inner surface of the steel belt, and the cross section of the oil-resistant rubber convex lining is 1/2 of the width of the steel belt; the two sides of the convex liner of the oil-resistant rubber are provided with flange plate peripheral convex sealing surfaces.
3. The corrosion prevention and protection device for the flange and the fastener in the marine environment according to claim 1, wherein: the steel belt is provided with locking buckles, and one group of locking buckles or two groups of locking buckles at two sides can be arranged in the middle according to the size of the flange and the width of the steel belt; and a viewing opening is arranged between the two locking buckles.
4. The corrosion prevention and protection device for the flange and the fastener in the marine environment according to claim 1, wherein: grease injection nozzles on the steel strip are not limited to 1, and a plurality of injection holes can be formed according to the size of the flange in actual production.
5. The corrosion prevention and protection device for the flange and the fastener in the marine environment according to claim 1, wherein: the two flanges with different diameters can be used for selecting and customizing the thickness of the two-side seal so as to realize the seal of the periphery of the flange and the anti-corrosion device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594111.5A CN111706745A (en) | 2020-06-23 | 2020-06-23 | Anticorrosive protection device of flange and fastener under marine environment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010594111.5A CN111706745A (en) | 2020-06-23 | 2020-06-23 | Anticorrosive protection device of flange and fastener under marine environment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111706745A true CN111706745A (en) | 2020-09-25 |
Family
ID=72543343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010594111.5A Pending CN111706745A (en) | 2020-06-23 | 2020-06-23 | Anticorrosive protection device of flange and fastener under marine environment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111706745A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458846A (en) * | 2022-02-18 | 2022-05-10 | 广东中博建设工程有限公司 | Municipal drainage pipeline connecting structure and construction method |
-
2020
- 2020-06-23 CN CN202010594111.5A patent/CN111706745A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114458846A (en) * | 2022-02-18 | 2022-05-10 | 广东中博建设工程有限公司 | Municipal drainage pipeline connecting structure and construction method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20200925 |
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| WD01 | Invention patent application deemed withdrawn after publication |